Technical Papers

Conference TECHNICAL PAPERS

Tuesday – October 6, 2026

09.15 – 10.15: Plenary talks

1.

ENERGY RESOURCES AS DRIVERS OF GEOPOLITICAL DECISIONS

Marijan Krpan, Agencija za ugljikovodike, Zagreb, Hrvatska

2.

DOMESTIC OIL AND GAS PRODUCTION INCREASE CHALLENGES IN REPUBLIC OF CROATIA

Josip Bubnić, INA- Industrija nafte d.d., Zagreb, Hrvatska

3.

FROM STRUCTURAL VULNERABILITY TO A REGIONAL TRANSIT HUB: PLINACRO’S ROLE IN THE TRANSFORMATION OF THE CROATIAN GAS SYSTEM

izv. prof. dr. sc. Darko Pavlović, Ivica Arar; Plinacro d.o.o., Zagreb, Hrvatska

4.

THE STRATEGIC ROLE OF JANAF: FROM SECURITY OF SUPPLY TO ENERGY TRANSITION

Damir Vrbić, JANAF d.d., Zagreb, Hrvatska

11.45– 13.00: Technical sessions

5.

GEOPOLITICAL SHOCKS AND STRUCTURAL RISKS FOR OIL AND GAS -THE STRAIT OF HORMUZ AS A STRESS TEST FOR GLOBAL ENERGY SECURITY

prof.dr.sc. Daria Karasalihović Sedlar, Sveučilište u Zagrebu Rudarsko-geološko-naftni fakultet, Zagreb, Hrvatska

6.

INA’S EXPANDING EXPLORATION PORTFOLIO: NEW ACREAGE, DISCOVERIES AND FUTURE DRILLING

Tomislav Baketarić, Josip Bubnić; INA - Industrija nafte d. d., Zagreb, Hrvatska

7.

FROM DISCOVERY TO FUTURE GROWTH: RESULTS OF THE SAVA-07 EXPLORATION CAMPAIGN AND EMERGING PROSPECTIVITY IN THE AREA

Stipica Brnada, Tomislav Baketarić, Toma Molnar, Tomislav Antolić; INA - Industrija nafte d. d., Zagreb, Hrvatska

8.

EXPERIENCE WITH THE IMPLEMENTATION OF REGULATION (EU) 2024/1787 ON THE REDUCTION OF METHANE EMISSIONS IN THE ENERGY SECTOR

Luka Ivanec, Goran Rončević, Dražen Kolembus, Željko Konopek; Plinacro d.o.o., Zagreb, Hrvatska

9.

DESIGNING THE ENERGY TRANSITION: FROM INFRASTRUCTURE MODERNIZATION TO SOCIO-TECHNICAL DESIGN OF A SUSTAINABLE ENERGY FUTURE

prof. dr. sc. Vladislav Brkić; Sveučilište u Zagrebu Rudarsko-geološki-naftni fakultet, Zagreb, Hrvatska
prof. dr. sc. Nikola Mrvac; Sveučilište Sjever, Koprivnica, Hrvatska
doc. dr. sc. Zoran Najdanović; Sveučilište u Zagrebu Grafički fakultet, Zagreb, Hrvatska

15.00 – 16.00: Technical sessions

10.

GEOLOGICAL AND TECHNICAL BASIS FOR THE DEVELOPMENT OF THE GRUBIŠNO POLJE UNDERGROUND GAS STORAGE FACILITY

Bruno Ernečić, Dijana Bigunac, Ivan Zelenika, Petra Valjak; Podzemno skladište plina d.o.o., Zagreb, Hrvatska

11.

THE ROLE OF MODERN 3D SEISMIC DATA IN REVEALING THE POTENTIAL OF EXISTING OIL AND GAS FIELDS (PRIVLAKA-ĐELETOVCI)

Ivan Misović, Tomislav Antolić, Toma Molnar, Ivana Žanić; INA - Industrija nafte d. d., Zagreb, Hrvatska

12.

TECTONO-STRATIGRAPHY AS A FRAMEWORK FOR MODERN PETROLEUM RESOURCES MANAGEMENT SYSTEM (SPE) – PANNONIAN BASIN SYSTEM

Alan Vranjković i Ana Majstorović Bušić; INA - Industrija nafte d. d., Zagreb, Hrvatska

13.

INTERPRETATION OF A GEOTHERMAL PROSPECT USING STRUCTURAL SEISMIC ATTRIBUTES (The Leščan Case Study)

Davorin Balić, Kristijan Rumora, Tihana Ružić Pernar; INA - Industrija nafte d. d., Zagreb, Hrvatska

16.30 – 18.30: Technical sessions

14.

AN INTEGRATED WORKFLOW FOR LABORATORY VALIDATION AND RESERVOIR-SCALE ASSESSMENT OF SURFACTANT–POLYMER FLOODING

Ante Borovina, Nikola Cota, Robert Šimić, Marko Gaćina; INA - Industrija nafte d. d., Zagreb, Hrvatska

15.

INTRODUCING A NOVEL METHOD FOR OPTIMIZING THERMAL OUTPUT FROM DEEP BOREHOLE HEAT EXCHANGERS USING NEURAL NETWORKS

József Pap, Ádám Koncz; Rotary Drilling Co. Ltd. & Institute of Mining and Energy – University of Miskolc
Krisztián Mátyás Baracza; Research Institute of Applied Earth Sciences – University of Miskolc

16.

DYNAMIC MODELLING OF 4TH GENERATION DISTRICT HEATING AND COOLING SYSTEMS BASED ON GEOTHERMAL ENERGY

prof. dr. sc. Luka Perković, Filip Milešević; Sveučilište u Zagrebu Rudarsko-geološki-naftni fakultet, Zagreb, Hrvatska

17.

ENVIRONMENTAL IMPACT OF FOSSIL-FUEL COMBUSTION DRIVERS IN NATURAL GAS COMPRESSION SYSTEMS

Mato Siladić, S.C.A.N., Zagreb, Croatia

18.

MOBILE CNG UNIT

Damir Jeličić, Pico Flow Controls, d.o.o., Zagreb, Hrvatska

19.

SUBSEA GAS PIPELINE CATHODIC PROTECTION SYSTEM RETROFIT PROJECT

Hrvoje Krpan, Hrvoje Goreta; INA- Industrija nafte d.d., Zagreb, Hrvatska
Krešimir Kekez; PA-EL d.o.o., Veliko Trgovišće, Hrvatska

20.

Corrosion and inhibitor management transformation - Integrated decision-making model advanced by coupon inclusion

Ivana Kapustić Pavić, Davor Kovačević, Izidora Jurinić Kujundžić; INA - Industrija nafte d. d., Zagreb, Hrvatska

21.

FROM CLASSIC TO COMPUTER PROCESSING OF LOG DATA: HISTORICAL DEVELOPMENT AND APPLICATION

Zlatko Đurić, Božidar Jančiković; HUNIG, Zagreb, Hrvatska
Zoran Čogelja; INA - Industrija nafte d. d., Zagreb, Hrvatska

Wednesday – October 7, 2026

09.00 – 09.40: Poster presentations

22.

INCREASING ENERGY EFFICIENCY - CONTRIBUTION TO ECONOMIC SUSTAINABILITY

dr. sc. Ines Hemetek-Potroško, Damir Robeli; INA - Industrija nafte d. d., Zagreb, Hrvatska

23.

METHANE EMISSIONS: FROM REGULATION TO IMPLEMENTATION IN OIL AND GAS PRODUCTION

Tanja Šikanja, INA - Industrija nafte d. d., Zagreb, Hrvatska

24.

E&P LAB: SEEING THE UNSEEN UNDERGROUND

Jasmina Jelić-Balta, Adaleta Perković; INA - Industrija nafte d.d., Zagreb, Hrvatska

25.

STATUS OF GLOBAL GAS PRODUCTION FROM UNCONVENTIONAL RESERVOIRS

izv. prof.dr.sc. Sonja Koščak Kolin, Sveučilište u Zagrebu Rudarsko-geološko-naftni fakultet, Zagreb, Hrvatska
Sonja Buti Njie; INA - Industrija nafte, d.d., Zagreb, Hrvatska
prof.dr.sc. Vladislav Brkić, prof.dr.sc. Lidia Hrnčević; Sveučilište u Zagrebu Rudarsko-geološko-naftni fakultet, Zagreb, Hrvatska

26.

CARBONATE BASEMENT IN MURA BASIN – ITS LITHOLOGY VARIETIES AS RESULT OF DIFFERENT DEPOSITION ENVIRONMENTS AND PALEORELIEF – DISPLAYED ON EXAMPLES OF VUKANOVEC AND ZEBANEC FIELD

Nada Krklec, Dina Zopf; INA - Industrija nafte d. d., Zagreb, Hrvatska

09.40 – 10.55: Technical sessions

27.

REPURPOSING LEGACY HYDROCARBON WELLS FOR GEOTHERMAL DEVELOPMENT IN SZEGED

Zsuzsanna Winkler; MOL Upstream, Budapest, Hungary

28.

DRILLING OF GEOTHERMAL WELL GT-1

Siniša Lelak, Tomislav Rod; INA - Industrija nafte d. d., Zagreb, Hrvatska

29.

A THEORETICAL FRAMEWORK FOR GEOTHERMAL WELL GT-1 TESTING USING COILED TUBING N2 LIFT

dr. sc. Goran Lešković; INA - Industrija nafte d. d., Zagreb, Hrvatska

30.

REDUCING UNCERTAINTY IN SHALLOW AND MEDIUM-DEEP GEOTHERMAL RESOURCE UTILIZATION – RESULTS FROM THE HRZZ INNOGEOPOT PROJECT

Petra Matešković, Marija Macenić, Tomislav Kurevija; Sveučilište u Zagrebu Rudarsko-geološki-naftni fakultet, Zagreb, Hrvatska

31.

MODELING FLEXIBLE TWO-PHASE FLOW OF GEOTHERMAL RESERVOIR FLUID IN PRODUCTION AND INJECTION WELLS

Filip Milešević, prof. dr. sc. Luka Perković; Sveučilište u Zagrebu Rudarsko-geološki-naftni fakultet, Zagreb, Hrvatska

11.45 – 12.45: Technical sessions

32.

FEASIBILITY ASSESSMENT OF AQUIFER THERMAL ENERGY STORAGE IN ZAGREB, CROATIA

Katarina Marojević, Marija Macenić, Tomislav Kurevija; Sveučilište u Zagrebu Rudarsko-geološki-naftni fakultet, Zagreb, Hrvatska

33.

EU LEGISLATIVE FRAMEWORK FOR METHANE EMISSIONS IN THE ENERGY SECTOR

Karolina Čegir, M.Eng.; Energy Community Secretariat, Vienna, Austrija

34.

PROPOSED EU PUBLIC PROCUREMENT REGULATION: A NEW SHIELD FOR THE EUROPEAN MARKET

Petra Šantić; Odvjetnica Petra Šantić, Zagreb, Hrvatska

35.

METHANE HYDRATES AS AN UNCONVENTIONAL FUTURE ENERGY SOURCE – DESIGN OF A UTILITY MODEL FOR THEIR GENERATION IN A COST-AFFORDABLE WAY

Marko Uzelac, Luka Uzelac, prof. dr. sc. Borivoje Pašić: Sveučilište u Zagrebu Rudarsko-geološko-naftni fakultet, Zagreb, Hrvatska